Sand polishing-machine



(No Model.) 3 Sheets-Sheet 1. J. D. WILSON & W. J. DELANO. SANDPOLISHING MACHINE.

No. 462,185. Patented Oct. 27, 1891.

(No Model.)

3 Sheets-Sheet 2. J. D. WILSON & W. J. DELANO.

SAND POLISHING MACHINE. No. 462,185. Patented Oct. 27, 1891.

(No Model.) 3 Sheets-Sheet 3.

J. D. WILSON & W. J. DELANO.

SAND POLISHING MACHINE. No. 462,185. Patented 001:. 2'7, 1891.

NITED STATES PATENT Fries.

JAMES D. \VILSON AND IVILLIAM J. DELANO, OF EDWARDSVILLE, ILLINOIS,ASSIGNORS TO THE N. O. NELSON MANUFACTURING COMPANY, OF ST.

LOUIS, MISSOURI.

SAND POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 462,185, dated October27, 1891.

Application filed May 22, 1891. Serial No. 393.774. (N model.)

T0 (11 whom, it may concern.-

Be it known that we, JAMES D. \VILSON and WILLIAM J. DELANO, ofEdwardsville, Illinois, have jointly made a new and usefulImprovement inSand Polishingfllachines, of which the following is a full, clear, andexact description.

The present improved machine is well adapted for hollow or other workhaving intezo rior parts to be polished.

Another feature of the machine is its adjustableness, whereby provisionis made not only for operating upon objects held at a higher or lowerlevel, but also in different parts of the room containing the machine,all, together with minor features of the construction, substantially asis hereinafter described and claimed, aided by the annexed drawings,making part of this specification, in which Figure 1 isa side elevationof the improved machine. The view includes a sample of the work operatedupon by the machine; Fig. 2, aplan of the machine; Fig. 3, a sideelevation of the machine, but as when reversed from its position of Fig.1; Fig. 4, a vertical crosssection on the line A i of Fig. 1; Fig.5,aview similar to that of Fig. 1, illustrating the vertical adjustmentof the polishing-belt at the outer end thereof; and Fig. 6, a detailupon 0 an enlarged scale, illustrating the relative position of the beltand the work during the polishing operation.

The same letters of reference denote the same parts.

The machine under consideration, generally considered, comprises a baseA, supporting bearings B B; a shaft O, which is journaled in saidbearings and is provided with a fast andaloose pulley D D; an arm E,journaled at e 6' upon said shaft 0 and extending thence outwardtherefrom and carrying a small pulley F at its outer end and having alateral offset 6 to enable said pulley Fto be in line with alargerdriving-pulley G, which is mounted upon said shaft 0; a sandpolishingbelt l L'which is carried around said pulleys G F, and asupport I for said arm E toward the outer end thereof. Said arm E ismade extensible, as indicated at 6 to enable the outer portion a to beset outward from or drawn in toward the inner portion 6 of said armaccording as it may be needed to suitably tighten the belt H upon itsbearing. It (the arm E) can also be turned upon the shaft 0, asindicated by the arrows y, to and from its positions shown,respectively, in Figs. 1 and 3 In either of said positions the support Iserves to uphold the outer end of the arm; but said support is connectedwith said arm at a point "6 far enough inward from the position of thepulley F to provide ample room for operating the part which is beingpolished by the belt. To enable the support I to be used in either ofsaid positions of the arm E, it is constructed substantially as follows:a" represents a block of any suitable form for supporting the arm E. Inthe present instance said arm extends through a notch i in the block,and a keeper r' is applied to the block 1" to confine the arm E therein.This block t" at its sides, respectively, is provided with journals uponwhich the legs 1' i and the support I are hung and in such a manner asto enable said legs to be turned from their position of Fig. 1 intotheir position of Fig. 3. Said blocks 1'' also sustain a pulley J, whichis an additional support for the belt H in the vicinity of the point atwhich the Work to be polished is applied to the belt. Said pulley J isjournaled in a bearingj, which in tnrnis secured to said block 1'. Anadditional feature of said support I is its vertical adjustableness. Tothis end the legs t 1 as indicated at 6 are adapted to be lengthened orsh ortenedthat is, if it is desired to present the work K at a higherlevel to the belt the legs 2'" i are lengthened, by which means the armE is turned upward upon its bearing O, and when it is preferred to holdthe work K at a lower level the legs 6 71 are shortened, by which meansthe arm E is turned downward upon its bearings C. These last describedadjustments are indicated, respectively, by the broken and by the fulllines in Fig. 5. A l

A mode of operating the present machine is indicated in Fig. l andillustrated in Fig. 6. Motion having been imparted to the belt H bymeans of power applied, to the pulley D, and the outer end of the arm Ebeing ad- 100 justed as to position and height, the work say the seatKis presented to the projecting portion of the belt, as indicated inFig. l, and then slipped thereonto and ultimately adjusted, so that thebeveled edge 70, inclosing the opening 70 therein, is applied to thebelt substantially as shown in Fig. 6t-hat is, so as to bear upon thebelt at a point between its supports F J. In this position of the seatthat portion of the edge 7a which for the time being is being polishedis pressed against the belt, so as to bend the same, substantially asshown in Fig. 6, and cause the entire bevel of said edge 76 to besubjected to the action of the belt. That portion of the edge, therefore. which is subjected to the action of the beltis readily polished,and owing to the me tension of the arm E and the manner in which thebelt is carried around the extension the Work can be turned around thebelt and extension and all parts of the edge surrounding the opening kbe subjected to the action of the belt and the operation effectively andrapidly performed. As work of the kind un der consideration is of a moreor less bulky nature, it is occasionally desirable, after operating inone part of the room containing the machine, to be able to operate inanother part of the room without delaying to clear away the work whichhas already been operated upon. In such an event it is the practice toreverse the belt and its support from its position shown in Fig. 1 intoits opposite position shown in Fig. 3 and in the last named position toproceed at once with a fresh lot of material. This described ad justment is also of value in handling the work into and out of bulkyreceptacles, such as crates, in which it is the custom oftentimes totransport such goods. In thus changing the position of the arm and beltwith relation to the base A the block t" is rotated on the arm E, andthe legs i t' are turned upon their journals to enable the support I toassume its position shown in Fig. 3.

\Ve claim-- 1. In a sand polishing-machine, the combination of the shaft0, the arm E, the pulleys F G, the belt, and a support for said armtoward the outer end thereof and said arm being reversible,substantially as described.

'2. In a sand polishing-machine, the beltarm projecting outward beyondits support and having the sanding-belt carried around a bearing at theouter end of said arm, the upper and lower portions of said belt, at andin the vicinity of said bearing, being parallel or approximatelyparallel to adapt the same to hollow work, substantially as and for thepurpose described.

3. The belt-supporting arm E, reversible upon its bearing 0 andhavingits outer end supported upon a vertically-adj nstable support,substantially as described.

Witness our hands this 9th day of May, 1891.

JAMES D. WVILSON. WILLIAM J. DELANO.

Witnesses:

T. L. GAERTNER, EDWARD GAERTNER.

